3.2 To Port, Tune, or Debug

In Table 3-2, we list all the compile-time macros that are available.

Note that the Tune column of Table 3-2 recommends whether you should adjust (tune) the values for any particular macro. Those marked tune can be adjusted from within your Build m4 file. Those marked with port should be changed only in the rare event that you need to port sendmail to a new operating system.^[2] Those marked with debug should be defined only during porting to help debug the new binary but (for security reasons) should never be defined for the final production version.

^[2] But note that final porting should be done in include/sm/config.h, include/sm/conf.h, sendmail/conf.h, and sendmail/conf.c instead.

Also note that the -d column shows which debugging switches (-d0.1) can be used to determine whether the corresponding compile-time macro was defined when the sendmail binary was compiled. For most, if the name appears in the output, it was defined with a non-zero value.

Table 3-2. #define Macros for Compiling sendmail

Compile-time macro	§	Tune	-d	Description
ARBPTR_T	...T	port		How to cast an arbitrary pointer
AUTO_NIS_ALIASES	AUTO_NIS_ALIASES	tune	0.10	Add fallback alias techniques
BROKEN_RES_SEARCH	...IS_BROKEN	port		Broken resolver fix (e.g., Ultrix)
BSD4_3	BSD4_3	port		BSD 4.3-style signal handling
BSD4_4	BSD4_4	port		Compile for BSD 4.4 Unix
DATA_PROGRESS_TIMEOUT	DATA_PROGRESS_TIMEOUT	tune		Timeout inbound DATA phase
DNSMAP	DNSMAP	tune	0.1	Enable use of dns databases
DSN	DSN	tune		Support DSN
EGD	EGD	port	0.1	Enable use of the EGD daemon
ERRLIST_PREDEFINED	ERRLIST_PREDEFINED	port		Correct sys_errlist types
FAST_PID_RECYCLE	FAST_PID_RECYCLE	port	0.10	Quick reuse of pids
_FFR_...	_FFR...	tune	0.13	Try using future features
FORK	FORK	port		The type of fork(5) to use
GIDSET_T	...T	port		2nd argument to getgroups(2)
HAS...	HAS...	port	0.10	Has specific system call support
HESIOD	HESIOD	tune	0.1	Support hesiod database maps
HES_GETMAILHOST	HES_GETMAILHOST	tune	0.1	Use hesiod hes_getmailhost(3)
IDENTPROTO	IDENTPROTO	port	0.10	See Timeout.ident
IP_SRCROUTE	IP_SRCROUTE	tune	0.10	Add IP source-routing to $_
...IS_BROKEN	...IS_BROKEN	port		Things that can be broken
LA_TYPE	LA_TYPE	port	3.5	Define load-average support
LDAPMAP	LDAPMAP	tune	0.1	Enable use of ldap databases
LOG	LOG	tune	0.1	Perform logging
MAP_NSD	MAP_NSD	tune	1.0	Support Irix nsd maps
MAP_REGEX	MAP_REGEX	tune	1.0	Use regular expression maps
MATCHGECOS	MATCHGECOS	tune	0.1	Support fuzzy name matching
MAX...	MAX...	tune		Redefine maximums
MEMCHUNKSIZE	MEMCHUNKSIZE	tune		Specify memory malloc size
MILTER	MILTER	tune	0.1	Enable the X config command
MIME7TO8	MIME7TO8	tune	0.1	Support MIME 7- to 8-bit
MIME8TO7	MIME8TO7	tune	0.1	Support MIME 8- to 7-bit
NAMED_BIND	NAMED_BIND	tune	0.1	Support DNS
NDBM	NDBM	tune	0.1	Support Unix ndbm(3) maps
NEED...	NEED...	port		Something amiss with your OS?
NET...	NET...	tune	0.1	Select network type
NETINFO	NETINFO	tune	0.1	Support NeXT netinfo(3) maps
NEWDB	NEWDB	tune	0.1	Support Berkeley db(3) maps
NIS	NIS	tune	0.1	Support nis maps
NISPLUS	NISPLUS	tune	0.1	Support nisplus maps
NOFTRUNCATE	NOFTRUNCATE	port	0.10	Lack ftruncate(2) support
NO_GROUP_SET	NO_GROUP_SET	port		Prevent multi-group file access
NOTUNIX	NOTUNIX	tune	30.2	Exclude "From " line support
_PATH...	_PATH...	tune		Hard-code paths inside sendmail
PH_MAP	PH_MAP	tune	0.1	Support for PH maps
PICKY_HELO_CHECK	PICKY_HELO_CHECK	tune		Become picky about HELO
PIPELINING	PIPELINING	tune	0.1	Enable PIPELINING extension
PSBUFSIZ	PSBUFSIZ	tune		Size of prescan( ) buffer
QUEUE	QUEUE	tune		Enable queueing (prior to V8.12)
QUEUESEGSIZE	QUEUESEGSIZE	tune	41	Amount to grow queue work list
REQUIRES_DIR_FSYNC	REQUIRES_DIR_FSYNC	port	0.10	fsync( ) for directory updates
SAFENFSPATHCONF	...IS_BROKEN	port	0.10	pathconf(2) is broken
SASL	SASL	tune	0.1	Support AUTH (V8.10 and above)
SCANF	SCANF	tune	0.1	Support scanf(3) with F command
SECUREWARE	SECUREWARE	port	0.10	Support SecureWare C2 security
SFS_TYPE	SFS_TYPE	port		How to determine free disk space
SHARE_V1	SHARE_V1	port	0.10	Support for the fair share scheduler
SIOCGIFCONF_IS_BROKEN	...IS_BROKEN	port	0.10	SIOCGIFCONF ioctl(2) is broken
SIOCGIFNUM_IS_BROKEN	...IS_BROKEN	port	0.10	SIOCGIFNUM ioctl(2) is broken
SLEEP_T	...T	port		Type of return value for sleep2
SM_...	SM_...	port	0.12	Sendmail porting settings (V8.12 and above)
SM_HEAP_CHECK	SM_HEAP_CHECK	port	0.12	Memory-leak detection (V8.12 and above)
SM_CONF_SHM	SM_CONF_SHM	tune	0.12	Use shared memory (V8.12 and above)
SMTP	SMTP	tune		Enable SMTP (prior to V8.12)
SMTPDEBUG	SMTPDEBUG	debug		Enable remote debugging
SMTPLINELIM	SMTPLINELIM	n/a		Default for obsolete F=L flag
SOCKADDR_LEN_T	...T	port		Accept's 3rd argument type
SOCKOPT_LEN_T	...T	port		getsockopt(2)'s 5th arg type
SPT_TYPE	SPT_TYPE	port		Process title support
STARTTLS	STARTTLS	tune	0.4	Enable TLS (V8.11 and above)
SUID_ROOT_FILES_OK	SUID_ROOT_FILES_OK	debug	0.1	Allow root delivery to files
SYSLOG_BUFSIZE	SYSLOG_BUFSIZE	port		Limit syslog(3) buffer size
SYSTEM5	SYSTEM5	port	0.10	Support SysV-derived machines
SYS5SIGNALS	SYSTEM5	port	0.10	Use SysV-style signals
TCPWRAPPERS	TCPWRAPPERS	tune	0.1	Use libwrap.a (V8.8 and above)
TLS_NO_RSA	TLS_NO_RSA	port	0.1	Turn off RSA (V8.12 and above)
TOBUFSIZE	TOBUFSIZE	tune		Set buffer for recipient list
TTYNAME	TTYNAME	debug	35.9	Set $y to tty name (obsolete)
...T	...T	port		The types returned by functions
UDB_DEFAULT_SPEC	UDB_DEFAULT_SPEC	tune		Default User Database location
USE_DOUBLE_FORK	USE_DOUBLE_FORK	port	0.10	Fork twice (V8.12 and above)
USE_ENVIRON	USE_ENVIRON	port	0.10	Use environ (V8.12 and above)
USING_NETSCAPE_LDAP	USING_NETSCAPE_LDAP	tune	0.10	Netscape ldap (V8.10 and above)
USERDB	USERDB	tune	0.1	Support the User Database
USESETEUID	USESETEUID	port	0.10	Support seteuid(2) changes
WILDCARD_SHELL	WILDCARD_SHELL	debug		Redefine wild card shell
XDEBUG	XDEBUG	debug	0.1	Support sanity checks